Extraction of nikel (II) frome aqueous solution by using 2-[α- Naphthyl azo ] -4,5-diphenyl imidazol | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 12, Issue 4, December 2012, Pages 92-103 PDF (0 K) | ||
| Author | ||
| Ghusoon .F. Hameed | ||
| Abstract | ||
| Extraction of nikel (II) from aqueous solution by use new ligand 2-[α- Naphthyl azo ] -4,5-diphenyl imidazol (α-NADPI) which is prepared as in study [1] is proposed as a sensitive and selective analytical reagent for the extractive spectrophotometric determination and extraction of Ni+2, this study shows the optimum pH for extraction Ni+2 was (pHex= 9) , also the two layers need(10 minutes) for shaking to reach the novel equilibrium ,as well as the optimum concentration of Ni(II) for high extraction ability was ( 30 μg Ni+2 ) (1.022 x 10-4 M) ,stoichiometric study shows the more probable structure of ion pair complex extracted was(1:1) (metal: ligand ) [Ni (α-NADPI)]+2 (Cl-)2 , so that organic solvent studies shows there is not any linear relation between distribution ratio (D) and dielectric constant (Ɛ) for organic solvents used,at later thermodynamic study shows the reaction between Ni+2 ions and ligand( α-NADPI) was endothermic reaction | ||
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